here is an "unofficial" work-around to allow 64-bit Office/Word to work with ALM:
https://community.microfocus.com/adtd/sws-qc/f/itrc-895/34568/workaround-ota-64-bit-applications-excel-word-etc
Workaround: OTA & 64 Bit Applications (Excel, Word etc.) - ALM/QC User Discussions - ALM / Quality Center
Make sure you do a registry backup before applying this work-around (at your own risk).
I tried this on Win11 and it did not work, maybe something different in 11 than 10, but it did work in Win10
There is a 2nd "official" MF solution to 64/32 bit issue:
https://orasi365-my.sharepoint.com/personal/paul_oberly_orasi_com/Documents/Microsoft Teams Chat Files/KM03119576-ALM
Support Tip_ Using ALM OTA API with 64-bit applications.pdf)
Starting with ALM 16.01, you CAN use the 64-bit ALM client Registration and it enables "surrogate" -- exactly the same way as the two above methods result in.